* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Poppins", sans-serif;
  background: #fffbf0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  gap: 60px;
  padding: 40px;
}

.wrapper {
  background: #fff;
  padding: 50px 40px;
  border: 3px solid #f4c430;
  max-width: 300px;
  text-align: center;
  position: relative;
}

.wrapper::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: #f4c430;
  z-index: -1;
  transform: rotate(2deg);
}

.wrapper h2 {
  font-size: 2.5rem;
  font-weight: 300;
  color: #2c2c2c;
  margin: 0;
  line-height: 1.1;
  letter-spacing: -1px;
}

.wrapper h2 s {
  color: #d32f2f;
  text-decoration: line-through;
  text-decoration-thickness: 3px;
}

/* Checker Section */
.container {
  background: #fff;
  padding: 50px 40px;
  border: 3px solid #ffcc02;
  max-width: 450px;
  width: 100%;
  text-align: left;
  position: relative;
}

.container::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: #ffcc02;
  z-index: -1;
  transform: rotate(-1deg);
}

.container h2 {
  font-size: 1.8rem;
  font-weight: 500;
  color: #2c2c2c;
  margin-bottom: 30px;
  text-align: center;
}

h2 {
  margin-bottom: 20px;
}

.password-box {
  width: 100%;
  margin: 0;
  font-family: inherit;
}

label {
  display: block;
  margin-bottom: 12px;
  font-weight: 500;
  color: #2c2c2c;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input[type="password"] {
  width: 100%;
  padding: 18px 20px;
  border: 2px solid #f0f0f0;
  background: #fefefe;
  font-size: 16px;
  font-weight: 400;
  outline: none;
  transition: all 0.2s ease;
  color: #2c2c2c;
  font-family: 'Courier New', monospace;
}

input[type="password"]:focus {
  border-color: #f4c430;
  background: #fffef8;
}

input[type="password"]::placeholder {
  color: #999;
  font-family: "Inter", "Poppins", sans-serif;
}

.strength {
  position: relative;
  height: 4px;
  width: 100%;
  margin-top: 15px;
  background: #f0f0f0;
  overflow: hidden;
  transition: all 0.3s ease;
}

/* Strength levels with solid colors */
input:focus:invalid ~ .strength {
  background: #fff8e1;
}

input:valid ~ .strength {
  background: #f0f8e1;
}

.strength::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

/* Optional */
input:focus:invalid ~ .strength::after {
  background: #d32f2f;
}

input:valid ~ .strength::after {
  background: #388e3c;
}

/* Trigger animation when password is being typed */
input:focus ~ .strength::after {
  transform: scaleX(1);
}


.strength-text {
  font-size: 12px;
  margin-top: 8px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

input:focus:invalid ~ .strength-text {
  opacity: 1;
  color: #f57c00;
}

input:valid ~ .strength-text {
  opacity: 1;
  color: #388e3c;
}

.hint {
  font-size: 13px;
  color: #666;
  margin-top: 25px;
  line-height: 1.5;
  padding: 20px;
  background: #fffbf0;
  border-left: 4px solid #f4c430;
}


@media (max-width: 768px) {
  body {
    flex-direction: column;
    gap: 40px;
    padding: 30px 20px;
  }
  
  .wrapper, .container {
    max-width: 100%;
  }
  
  .wrapper {
    padding: 40px 30px;
  }
  
  .wrapper h2 {
    font-size: 2rem;
  }
  
  .container {
    padding: 40px 30px;
  }
  
  .container h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .wrapper h2 {
    font-size: 1.8rem;
  }
  
  .container h2 {
    font-size: 1.3rem;
  }
  
  input[type="password"] {
    padding: 16px 18px;
    font-size: 15px;
  }
}
